Honda Motor Co., Japan's second- largest automaker, said fiscal second-quarter profit fell 41 percent as vehicle demand in the U.S. plunged and the yen gained against the dollar, eroding the value of exports. The company cut its full-year earnings forecast. Net income was 123.3 billion yen ($1.3 billion), or 67.96 yen a share, for the three months ended September, compared with 208.5 billion yen, or 114.94, a year earlier, the Tokyo-based automaker said in a statement today. Honda was expected to earn 131.4 billion yen, according to the median of three analyst estimates compiled by Bloomberg. Sales fell 4.9 percent to 2.83 trillion yen.